Supply-valve.



- UNITED STATES iate'nted October 13, 1905;.

PATENT OFFICE.

SU PPLY-VALVE.

srncrmce'rron forming part of Letters Pa e No. 74153 dated October 13,1903.

I. Application filed March 30,19Q3'. Serial No. 150,216. (No model.)

. signed for use in overhead tanks for waterclosets and the like and arranged to prevent leakage by beingnormally held to its seatby the pressure-supply and to automatically open against the said pressure-supply by the action of a float or similar device on the wa ter falling below a predetermined level in the tank.

The invention consists of novelfeatures and parts and combinations of the same, as will.

be more fully describedhereinafter and then pointed out in the claim.

A practical embodimentof the invention is represented in the accompanying drawings, forming a part of this specification,in which.

similar characters of reference indicate corresponding parts in all the views.

Figure l is a longitudinal sectional eleva tion of the improvement as applied to a bottom supply-pipe of the tank. Fig.2 isa side elevation of the improvement as applied to a' top supply-pipe for the tank. Fig. 3 is an enlarged sectional side elevation of the improvement, and Fig. at is a sectional plan view of the same on the line 4 40f Fig. 3. v

The valve-body A is provided with an en--' trance end A and a discharge end A andthe said entrance end A is screwed or otherwise secured to the head B of a pipe B, connected with a suitable "pressure-supply. As shown in Fig; l, the said pipeB is secured in the bottom of a tank 0, into which the discharge end A 'delivers the water, as hereinafter more fullydescribed, it being understood, however, that, if desired, the head B and its pipe B may be attached to the top of the tank 0, as shown in Fig. 2; but in either construction the improvements are alike, the only difierence being that the valve-body, as shown in Fig. 1, is vertically disposed and arranged in the lower portion of the tank,

While, as shown in Fig. 5, the valve-body extends horizontally and is above the waterlevel of the tank 0.

The entrance end -A of the valve-body A is provided with a valve-seat A raised outwardly in the head B, and onthe said seat A is adapted to be seated a valve D, normally held tovthe seat by the pressure-supply in the head B, so that leakage is not liable to take place.

The valveD is adapted to open against the pressure-supply, and for this purpose the valve D is held on the fluted end of a valvestem E, extending through the valve-seat A into the body A to connect with a plugF, mounted to slide in a cylindrical extension A, formed on the valve-body between the inlet and the outlet thereof, as plainly shown in the drawings.

On the outer endof the plug F is secured or formed an arm F, provided with an angular slot F into which projects a pin G, held on a float-arm G, fulcrumed on the valvebody A and carrying the stem H of a float H, adaptedto rise and tofallwith the level of the water in the tank 0.

Now when the 'tank 0 is filled to a predetermined level, as shown in Figs. 1 and 2,

then the valve D is held firmly to its seat A and when the water passes out of the tank and the float H moves downward with there ceding water-level then the arm G by its pin G acts on the arm F of the plug F,- so.

as to move the latter inward in the extension A and in doing .so causes the stem E to move in a like direction to move-the valveD use off itsseat'A against the pressure of the wa- I ter-supply. Now the water can pass from the head B through the open valve-seat A into the valve-body A and from the latter by the discharge end A into thetank to refill the latter. Now as the water rises in the tanklO'the floatH moves upward, and in doing so the arm G and pin G act on the arm F of the plug F to move the latter outward, and with it the stem E and valve D, so that the latter readily passes to its seat A to again close the valve-body to the pressure-supply, the valve being held to its seat by the pressure of the water in the head B".-

In order to direct the flow of water through the body A to the discharge end A I provide'the interior of the valve-body with a defiector A extending under the extension A as plainly shown in Fig. l.

The device is very simple and durable in construction, is not liable to easily get out of order, and by having the seat A raised in the manner described it is evident that the valve is firmly held to its seat when the tank is full, and consequently leakage and overflow of the tank are prevented, and at the same time the valve D moves readily 0% its seat when acted on by the float H, as previously explained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent In a supply-valve for tanks and the like, a valve-body having a raised valve-seat in its entrance end, and a cylindrical extension at its upper end, a valve of greater diameter than the seat and adapted to be seated on the valve-seat and held thereto by the pressure of the Water-supply, a stem secured to the valve, a plug secured to the valve-stem and Working in the cylindrical extension, said plug being provided With an angular and slotted plate at its upper end, a yoke having its members pivoted at their ends to the cylindrical extension of the valve-body and provided with a pin extending between the members adjacent to their pivoted ends and working in the slot of the said angular plate, and a stem secured at its inner end to the said yoke and carrying a float at its outer end.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WARREN THOMAS NICHOLS. \Vitnesses:

FRANK M. LoWDEN, FRANCIS B. TAYLOR. 

